The controller's power may be powered off during system suspend. This
will add suspend/resume support when the controller suffers power lost.
Signed-off-by: Xu Yang <xu.yang_2@xxxxxxx>
---
Changes since v1:
- wrap suspend/resume functions with CONFIG_PM_SLEEP.
---
drivers/usb/chipidea/host.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index bc3634a54c6b..ebe7400243b1 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -459,6 +459,18 @@ static void ci_hdrc_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)
ci_hdrc_free_dma_aligned_buffer(urb);
}
+#ifdef CONFIG_PM_SLEEP
+static void ci_hdrc_host_suspend(struct ci_hdrc *ci)
+{
+ ehci_suspend(ci->hcd, device_may_wakeup(ci->dev));
+}
+
+static void ci_hdrc_host_resume(struct ci_hdrc *ci, bool power_lost)
+{
+ ehci_resume(ci->hcd, power_lost);
+}
+#endif
+
int ci_hdrc_host_init(struct ci_hdrc *ci)
{
struct ci_role_driver *rdrv;
@@ -472,6 +484,10 @@ int ci_hdrc_host_init(struct ci_hdrc *ci)
rdrv->start = host_start;
rdrv->stop = host_stop;
+#ifdef CONFIG_PM_SLEEP
+ rdrv->suspend = ci_hdrc_host_suspend;
+ rdrv->resume = ci_hdrc_host_resume;
+#endif
rdrv->irq = host_irq;
rdrv->name = "host";
ci->roles[CI_ROLE_HOST] = rdrv;
--
2.34.1
